title: Psychometric assessment of the Adolescent Physical Activity Perceived Benefits and Barriers Scales.
abstract: The purpose of this study was to psychometrically test the Adolescent Physical Activity Perceived Benefits and Barriers Scales developed for middle-school-age youth. A total of 206 racially diverse 6th, 7th, and 8th graders completed questionnaires at two time points (2 weeks apart). For the 10-item Perceived Benefits Scale and the 9-item Perceived Barriers Scale, test-retest reliability (r = .70; r = .71, respectively) and internal consistency (Cronbach's alpha was .80 and .79, respectively, at time 1) were supported. Principal components analysis with Varimax rotation was employed to assess construct validity. A 2-factor solution emerged for each scale as predicted. The relationship between both scale scores and self-reported physical activity provided additional evidence of validity. Both instruments were found to be reliable and valid for measuring the perceived benefits of and barriers to physical activity in middle school youth.
authors.affiliation: Michigan State University College of Nursing, East Lansing, MI 48824-1317, USA. robbin76@msu.edu
authors.forename: Lorraine B
authors.initials: LB
authors.lastname: Robbins
authors.forename: Tsu-Yin
authors.initials: TY
authors.lastname: Wu
authors.forename: Alla
authors.initials: A
authors.lastname: Sikorskii
authors.forename: Blair
authors.initials: B
authors.lastname: Morley
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology; D001294:Attitude to Health; D002648:Child; D015444:Exercise / Q000523:psychology*; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006293:Health Promotion; D006801:Humans; D066298:In Vitro Techniques; D015146:Midwestern United States; D008960:Models, Psychological; D009042:Motivation; D015999:Multivariate Analysis; D009730:Nursing Assessment / Q000379:methods* / Q000592:standards; D015403:Nursing Evaluation Research; D015404:Nursing Methodology Research; D025341:Principal Component Analysis; D000297:Psychology, Adolescent; D011594:Psychometrics; D020377:Self Efficacy; D012647:Self-Assessment; D011795:Surveys and Questionnaires / Q000592:standards*